GReddy's new Type RS blow off valve is the hottest valve on the market.

GReddy Blow Off Valves are easily adjustable to prevent both premature boost leakage and compression surge. Each Type RS BOV is made of durable cast and billet aluminum frame and the valve to diaphragm ratio provides performance that cheap piston types cannot offer. The spring stiffness adjustment screw and 3 different sizes give the GReddy RS user the option to match vehicles with mild upgrades to heavily tuned engines. The Greddy Type RS BOV is also available in an easy to install kit form for many turbocharged vehicles.